Improvement in hemmers for sewing-machines



E. T. THOMAS.

HEMM'E'RS FOR SEWING MACHINES Patent'ed Jun e 20,1876.

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' EDDY T. THOMAS, or BOSTON, MASSACHUSETTS, ASSIGNOR TO HIMSELF ANDJULIUS S. SHAILER, OF SAME PLACE.

IMPROVEMENT IN HEMMERS FOR SEWING-MACHINES.

Specification forming part of Letters Patent No. 179,08E, dated June 20,1876; application filed April 10, 1876.

To all whom it may concern:

Be it known that I, EDDY T. THOMAS, of Boston, in the county of Suffolkand State of Massachusetts, have invented an Improved Hemmer, of whichthe following is a specification:

This invention relates to hemmers for sewing-machines, and has for itsobject to lay very fine hems, or to fell.

- The invention consists in the combination, with a presser-footprovided with a tongue and scroll and needle-hole, of an adjustableguide, forming part of the surrounding wall of the needle-hole, andprojecting beyond theunder face of the footto guide the outer edge ofthe hem being formed, this guide and the usual stationary straightprojecting rib or gage on the under side of the presser form in g achannel into which the fold to be stitched is delivered and held on allsides against displacement, and by which it is guided and presented tothe needle'to be stitched.

' In turning very narrow hems the cloth is liable to be removed from thetongue and scroll; and when turned, and the unstitched hem leaves thetongue, friction on the hem or pressure against it between the presserand supporting-bed is apt to flatten the hem and make it wider than isdesired. I avail myself of the tendency of the hem to be made wider bybeing flattened to vary the width of narrow hems on a presser-footFigure 1 is a top view of a presser-foot hemmer, provided with myimprovement. Fig. 2- is an under-side view thereof ,Fig. 3, a top viewof a modified form of hemmer. Fig. 4 represents the scroll and gage ofFig. 3, removed; and Fig. 5 is a cross-section taken through the footand guide in lirieof needlehole.

The presser-foot a is and may be of any usual construction to adapt itto the partic ular sewing-machine to which it is to be applied, thepresser-shank having an opening of suitable shape by which to attach thepresser to the presser-bar by a set-screw, as at b.

The material to be hemmed is to be intro-v duced under the resser-foot,as shown'in this instance, from the left-hand side, then up over thetongue 0, and between it and the scroll d, or finger folded partiallyaround the tongue, the tongue and scroll acting as usual.

The gage f for the inner edge of the hem is common to presser-foothemmers, and acts as usual.

The needle-hole or passage is formed between the edge of the resser-footon one side and a movable guide, g, on the other side, the guide havinga guidingedge, 71 adapted to project below the face 1 of the under sideof the presser. This guide'is held in position by a suitable screw, 2,and is made adjustable laterally, toward or from the usual gage f, togovern theposition of the outer edge of the material being hemmed. Thisguiding-edge is, it will be noticed, provided with a groove, 1', inwhich the needle works when the guide is moved to its innermost positionfor the narrowest hems, the groove in the guide-and thecorrespondingiyopposedgroove in the presser then forming substantially around needle-hole; and when in this position the hem will be verynarrow, the edge of the cloth guided between the gage and guiding-edgecannot spread, because it is guided at all sides of the fold, and theline of stitching will be made very close to the edge.

To make a hem a little wideror heavier, move the guiding-edge laterallyaway from the gage, forming a wider channel between the edge h and gagef. The gagef may be on either edge of the presser, according to themachine on which the hemmer is to be used.

In Figs. 1 and 2 the scroll forms part of the presser, but in Fig. 3 thescroll is shown as attached to the adjustable guide g, and Fig. 4. showsthe guide and scroll removed.

I am aware that an adjustable gage has been. used on a resser-foothemmer, and that I do not claim; but

I do claim-- The presser and its tongue, scroll, and gage, incombination with the laterally-adjustable gage, provided with aguiding-edge, and forming one wall of the needle hole, to operatesubstantially as described.

In testimony whereof I have signed my name to this specification in thetwo subscribing witnesses.

EDDY T. THOMAS.

presence of Witnesses L. H. LATIMER, J. S. SHAILER.

